Air Filter and Spark Plugs (gas millage)
I know that a clean air filter and fresh spark plugs will help with gas milage, but I don't want to go out and drop money when it won't really help.
Wondering how I should know when to replace the spark plugs. Is there a way to look at them? I have had the jeep for a little over a year and have not touched them, but don't know when the previous owner replaced them. Should I just do it anyway, or what?
A fram air filter costs 16 bux at meijers... IMO that is quite excessive, making me ask; "is there a cheaper place to get one"?, and "will this even matter"?
Besides this; are there any other suggestions as to improve gas millage, because I am getting pretty frustrated with mine.
1996 4.0L Jeep Grand Cherokee Laredo. Original and Stock everything. 177K miles.